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WO1997033765A1 - Filtre d'adsorption variable - Google Patents

Filtre d'adsorption variable Download PDF

Info

Publication number
WO1997033765A1
WO1997033765A1 PCT/EP1997/001030 EP9701030W WO9733765A1 WO 1997033765 A1 WO1997033765 A1 WO 1997033765A1 EP 9701030 W EP9701030 W EP 9701030W WO 9733765 A1 WO9733765 A1 WO 9733765A1
Authority
WO
WIPO (PCT)
Prior art keywords
adsoφtionsfilter
outlet
tank
bypass valve
communicating
Prior art date
Application number
PCT/EP1997/001030
Other languages
German (de)
English (en)
Inventor
Karl Ernst Hummel
Original Assignee
Filterwerk Mann+Hummel Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Filterwerk Mann+Hummel Gmbh filed Critical Filterwerk Mann+Hummel Gmbh
Publication of WO1997033765A1 publication Critical patent/WO1997033765A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0415—Beds in cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0854—Details of the absorption canister
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4516—Gas separation or purification devices adapted for specific applications for fuel vapour recovery systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means

Definitions

  • the invention relates to an adsorption filter, in particular in vehicles with an internal combustion engine.
  • Such adsorption filters are known, e.g. through the use of activated carbon filters in commercially available passenger cars.
  • the activated carbon filters used in the United States of America must meet the requirements of the "ORVR” legislation (on-board refueling vapor recovery) and the "enhanced evap” framework.
  • ORVR on-board refueling vapor recovery
  • the "enhanced evap” framework During the ORVR refueling process, the fuel vapor in the tank is displaced by the inflowing fuel into the activated carbon filter (AKF).
  • Low flow resistances in the overall system are required for reliable operation. It follows that the ratio of the length of the AKF to its diameter is relatively small.
  • the adsorption filter comprises at least one inlet communicating with the fuel tank of the internal combustion engine, at least two areas containing adsorbent which communicate with one another and at least one outlet communicating with the ambient air and at least one outlet communicating with the fuel tank.
  • a further development of the invention provides that the adsorption filter has a bypass valve. With this valve, adjustments to the respective operating conditions of the vehicle, such as refueling or simply standing in the sun, are possible.
  • a further development according to the invention provides that the two areas can be separated from one another by means of the bypass valve during refueling, so that the fuel vapor produced flows only through one area. This has the advantage that the flow resistance is reduced and thus the gas cushion that ends the refueling process early does not arise.
  • the bypass valve is arranged such that when the adsorption filter is regenerated, ambient air flows in via the outlet communicating with the ambient air and flows into the tank via the loaded adsorption filter medium region by means of the outlet communicating with the fuel tank.
  • the bypass valve has a double function. It is used in the operating state of the tanker in order to optimize the loading of the area containing the adsorbent with a larger cross-section with a reduced flow resistance.
  • the other area with adsorbent which has a larger ratio of length to cross section and thus a higher flow resistance, must be decoupled through the bypass valve. If e.g.
  • the operating parameters change in such a way that the gas pressure decreases in the interior of the tank or a negative pressure arises with respect to the ambient pressure, then it can be provided that the bypass valve ambient air flows into the tank for the purpose of backwashing the adsorbent leaves.
  • a further development of the invention according to the invention provides that the bypass valve is evident by means of the signal induced when the tank cap is opened. Happily happens the opening of the bypass valve only when the tank is to be filled, because in the other operating states the question of the flow resistance is a secondary aspect, much more important is the adsorption path that the gas can cover.
  • the operating parameters change so suddenly that the flow geometry of the overall system must be changed with a view to orderly refueling, which is done by means of the bypass valve; the reason for this comes from opening the tank cap. This can be done mechanically, for example by means of a gear construction, or electrically.
  • the adsorption filter has at least one further inlet communicating with the fuel tank, which inlet can be activated in particular when refueling.
  • Figure 1 is a schematic representation of the Adso ⁇ tionsfilter in serial execution with bypass as a separating element between the areas
  • FIG. 2 is a schematic representation of the Adso ⁇ tionsfilter with bypass as
  • Figure 3 shows a section through the valve Figure 4 is a system diagram fuel tank / activated carbon filter at a standstill
  • Figure 5 shows a system diagram fuel tank / activated carbon filter at a standstill when refueling
  • Figure 6 is a system diagram fuel tank / activated carbon filter in Deso ⁇ tions.
  • the adsorption filter 1 consists of two areas 3 containing adsorption agents which, as shown in FIG. 1, are connected to one another in such a way that the serial coupling of the bypass valve 7 can either be completely interrupted or restored.
  • the fuel-containing gas from the fuel tank of the internal combustion engine reaches the adsorption filter 1 through inlet 2 in normal operation.
  • inlet 2 In the filter itself, it finds a relatively long distance in operation, from inlet 2 to outlet 5, as both in FIG. 1 and in FIG is shown in Fig. 2, on which it can come into contact with the activated carbon in the filter.
  • bypass valve 7 in FIG. 2 lies in the reduction of the flow resistance without a complete separation of the areas from one another being necessary, which means that in this special embodiment the remaining adsorption surface is also available, however with changed flow conditions.
  • the bypass valve 7, which is shown in section in FIG. 3, can contribute to backwashing the filter 1 in selected cases. Otherwise, the backwashing of the adsorption filter 1 takes place by means of the outlet 5, through which ambient air enters the filter 1.
  • FIG. 4 shows an adsorption filter 1 which has an inlet 2 through which the fuel vapors reach the adsorption filter 1 by means of a feed line 18.
  • the Adso ⁇ tionsfilter comprises two separate areas containing Adso ⁇ tionsstoff 3.
  • cleaned air escapes in normal operation, which its fuel vapor content in the tank 10, z. B. outgassed from the fuel due to solar radiation or other heat, accumulates on the activated carbon.
  • the outlet 5 is necessary for the desorption case in order to feed the fuel vapor components collected to the engine, not shown.
  • the inlet 6 allows a quick removal of fuel vapor to the adsorption filter when refueling by means of a larger cross section.
  • the tank 10 is connected to the engine (not shown) by means of a fuel line 15 and is supplied with fuel in the operating state.
  • FIG. 5 shows an adsorption filter 1 which has an inlet 2 through which the fuel vapors reach the adsorption filter 1 by means of the feed line 18.
  • the adsorption filter comprises two separate areas 3 containing adsorption agents, which are arranged in such a way that the flow guidance of the fuel vapors can be influenced by a bypass valve which is not visible in FIG. 5 but which corresponds to that arranged in FIG. Cleaned air escapes through the outlet 4 in normal operating conditions, which reduces its fuel vapor content in the tank 10, e.g. B. outgassed from the fuel due to solar radiation or other heat, accumulates on the activated carbon.
  • a bypass valve which is not visible in FIG. 5 but which corresponds to that arranged in FIG. Cleaned air escapes through the outlet 4 in normal operating conditions, which reduces its fuel vapor content in the tank 10, e.g. B. outgassed from the fuel due to solar radiation or other heat, accumulates on the activated carbon.
  • the inlet 6 which is also like the bypass valve at Refueling is opened is allowed by means' of a larger cross-section a rapid discharge of fuel vapor to Adso ⁇ tionsfilter out.
  • the tank piece 14 provided with a gas cap 11 which can be closed so that the outgassing from the fuel 12 fuel vapor 13 in the illustrated in Figure 5 operating condition due to the resulting Pressure gradients and the supply line 18 reach the adsorption filter 10.
  • the tank 10 is connected to the engine (not shown) by means of fuel line 15 and is supplied with fuel in the operating state.There is also a connection between adsorption filter 1 and the engine via the regeneration line 16, which is by means of the regeneration valve 17 is closed, with both the opening width and the opening and closing position depending on the parameters of speed, load condition and throttle valve control. When the engine is stopped, the regeneration valve 17 is closed. When the engine is running, backwashing is carried out NEN and closing of inlet 6 and bypass valve can be mechanical or electrical, for. B. when opening the tank cap or by means of the resulting negative pressure during refueling.
  • FIG. 6 shows an adsorption filter 1 which has an inlet 2 through which the fuel vapors reach the adsorption filter 1 by means of a feed line 18.
  • the adsorption filter comprises two separate areas 3 containing adsorption agents.
  • outlet 4 passes through ambient air, which picks up its fuel vapor portion, backwashing on the activated carbon, and feeds the collected fuel vapor portions to the engine (not shown) via outlet 5.
  • the inlet 6 allows a quick discharge of fuel vapor 13 to the adsorption filter when refueling by means of a larger cross section.
  • the filler neck 14, via which the fuel 12 enters the tank 10, which is provided with a tank cap 11, is closed, as is the inlet 6.
  • the feed line 18 guides the fuel vapor generated in the tank 10 via inlet 2 into the adsorption filter, where the steam, due to the backwash flow conditions, does not accumulate directly on the activated carbon to the outlet 5.
  • the adsorption filter 1, or the outlet 5 and the engine via the regeneration line 16 which is evident by means of the regeneration valve 17 depending on the operating parameters of the engine , the backwashed fuel vapor enters the intake tract of the internal combustion engine, which is not shown in this exemplary embodiment.
  • the tank 10 is additionally connected to the engine (not shown) by means of fuel line 15 and is supplied with fuel in the operating state.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

L'invention concerne un filtre d'adsorption, s'utilisant notamment dans des véhicules à moteurs à combustion interne, qui comprend au moins une entrée (2) communiquant avec le réservoir de carburant du moteur à combustion interne, au moins deux zones (3) contenant des éléments adsorbants, qui communiquent l'une avec l'autre, ainsi qu'au moins une sortie (4) communiquant avec l'air ambiant et au moins une sortie (5) communiquant avec le réservoir de carburant.
PCT/EP1997/001030 1996-03-13 1997-03-01 Filtre d'adsorption variable WO1997033765A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19609565.4 1996-03-13
DE19609565 1996-03-13

Publications (1)

Publication Number Publication Date
WO1997033765A1 true WO1997033765A1 (fr) 1997-09-18

Family

ID=7787978

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/001030 WO1997033765A1 (fr) 1996-03-13 1997-03-01 Filtre d'adsorption variable

Country Status (1)

Country Link
WO (1) WO1997033765A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10049537A1 (de) * 2000-10-07 2002-04-11 Mahle Filtersysteme Gmbh Kraftstofftank-Entlüftungsanlage
DE19931895C2 (de) * 1998-07-17 2003-05-22 Ford Motor Co Einrichtung für eine Emission von Kraftstoffdämpfen bei Kraftfahrzeugen
EP1507081A1 (fr) * 2003-08-12 2005-02-16 Delphi Technologies, Inc. Dispositif de traitement de carburant evaporé
DE102004039163A1 (de) * 2004-08-11 2006-02-23 Kautex Textron Gmbh & Co. Kg Kraftstoffbehälter für ein Kfz
US20110100219A1 (en) * 2009-11-04 2011-05-05 Thomas Rudolph Deaeration and aeration system for a fuel tank and operating method
JPWO2023171453A1 (fr) * 2022-03-09 2023-09-14

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5021071A (en) * 1990-03-14 1991-06-04 General Motors Corporation Vehicle fuel tank pressure control method
WO1992001585A1 (fr) * 1990-07-26 1992-02-06 The British Petroleum Company Plc Appareil et procede de recuperation de vapeur
US5148793A (en) * 1991-05-20 1992-09-22 General Motors Corporation Compartmental evaporative canister and pressure control valve assembly
US5205330A (en) * 1990-11-22 1993-04-27 Fuji Jukogyo Kabushiki Kaisha Air breather system for fuel tank
DE4320384A1 (de) * 1993-06-19 1994-12-22 Mann & Hummel Filter Aktivkohlefilter zur Kraftstofftankentlüftung
DE4429875A1 (de) * 1993-08-23 1995-03-02 Walbro Corp Kraftstofftankanordnung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5021071A (en) * 1990-03-14 1991-06-04 General Motors Corporation Vehicle fuel tank pressure control method
WO1992001585A1 (fr) * 1990-07-26 1992-02-06 The British Petroleum Company Plc Appareil et procede de recuperation de vapeur
US5205330A (en) * 1990-11-22 1993-04-27 Fuji Jukogyo Kabushiki Kaisha Air breather system for fuel tank
US5148793A (en) * 1991-05-20 1992-09-22 General Motors Corporation Compartmental evaporative canister and pressure control valve assembly
DE4320384A1 (de) * 1993-06-19 1994-12-22 Mann & Hummel Filter Aktivkohlefilter zur Kraftstofftankentlüftung
DE4429875A1 (de) * 1993-08-23 1995-03-02 Walbro Corp Kraftstofftankanordnung

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19931895C2 (de) * 1998-07-17 2003-05-22 Ford Motor Co Einrichtung für eine Emission von Kraftstoffdämpfen bei Kraftfahrzeugen
DE10049537B4 (de) * 2000-10-07 2011-05-05 Mahle Filtersysteme Gmbh Kraftstofftank-Entlüftungsanlage
DE10049537A1 (de) * 2000-10-07 2002-04-11 Mahle Filtersysteme Gmbh Kraftstofftank-Entlüftungsanlage
EP1507081A1 (fr) * 2003-08-12 2005-02-16 Delphi Technologies, Inc. Dispositif de traitement de carburant evaporé
DE102004039163A1 (de) * 2004-08-11 2006-02-23 Kautex Textron Gmbh & Co. Kg Kraftstoffbehälter für ein Kfz
EP1625963A3 (fr) * 2004-08-11 2006-05-17 Kautex Textron GmbH & Co. KG. Réservoir de carburant pour automobile
US7219704B2 (en) 2004-08-11 2007-05-22 Kautex Textron Gmbh & Co. Kg Fuel tank for a motor vehicle
US20110100219A1 (en) * 2009-11-04 2011-05-05 Thomas Rudolph Deaeration and aeration system for a fuel tank and operating method
DE102009051860A1 (de) * 2009-11-04 2011-05-12 Mahle International Gmbh Ent- und Belüftungsanlage eines Kraftstofftanks und Betriebsverfahren
US8512453B2 (en) 2009-11-04 2013-08-20 Mahle International Gmbh Deaeration and aeration system for a fuel tank and operating method
JPWO2023171453A1 (fr) * 2022-03-09 2023-09-14
WO2023171453A1 (fr) * 2022-03-09 2023-09-14 臼井国際産業株式会社 Élément tube de véhicule et son procédé de fabrication
JP7690681B2 (ja) 2022-03-09 2025-06-10 臼井国際産業株式会社 車両用管部材及び車両用管部材の製造方法

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